Looking for long bike trails around the bay area

Hi Guys,
I plan stay in Palo Alto for two weeks at the end of March, and I'm looking for a 2-3 riding trip.
I'm not familiar with the bike trails in that area and I can sure use some help.
Looking specifically for 200 miles trail (give or take) for me & my CX bike.
Gravel \ Tarmac \ Trail - all good
Any info will help.
Thanks,
Amir

Hi Guys,
I plan stay in Palo Alto for two weeks at the end of March, and I'm looking for a 2-3 riding trip.
I'm not familiar with the bike trails in that area and I can sure use some help.
Looking specifically for 200 miles trail (give or take) for me & my CX bike.
Gravel \ Tarmac \ Trail - all good
Any info will help.
Thanks,
Amir